55825797 has 16 divisors (see below), whose sum is σ = 76012992. Its totient is φ = 36433920.

The previous prime is 55825793. The next prime is 55825799. The reversal of 55825797 is 79752855.

It is not a de Polignac number, because 55825797 - 2² = 55825793 is a prime.

It is a super-2 number, since 2×55825797² = 6233039221370418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55825793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46438 + ... + 47624.

It is an arithmetic number, because the mean of its divisors is an integer number (4750812).

Almost surely, 2^55825797 is an apocalyptic number.

It is an amenable number.

55825797 is a deficient number, since it is larger than the sum of its proper divisors (20187195).

55825797 is a wasteful number, since it uses less digits than its factorization.

55825797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508.

The product of its digits is 882000, while the sum is 48.

The square root of 55825797 is about 7471.6662800208. Note that the first 3 decimals coincide. The cubic root of 55825797 is about 382.1891121597.

The spelling of 55825797 in words is "fifty-five million, eight hundred twenty-five thousand, seven hundred ninety-seven".